Download or read book METHODE DE NEWTON APPROCHEE POUR LE CALCUL D ECOULEMENTS INSTATIONNAIRES COMPORTANT DES ZONES A TRES FAIBLES NOMBRES DE MACH written by IVAN.. MARY and published by . This book was released on 1999 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE ETUDE A POUR OBJET DE DEVELOPPER UNE METHODE NUMERIQUE CAPABLE DE SIMULER DES ECOULEMENTS INSTATIONNAIRES 2D DE FLUIDES VISQUEUX ET DONT LE DOMAINE D'APPLICATION S'ETEND DE L'INCOMPRESSIBLE AU SUPERSONIQUE. LA DISCRETISATION SPATIALE EST REALISEE PAR UNE TECHNIQUE DE VOLUMES FINIS SUR DES MAILLAGES COLLOCATIFS. UNE ATTENTION PARTICULIERE EST PORTEE SUR LA DISCRETISATION DES FLUX EULER, REALISEE GRACE AU SCHEMA AUSM+(P), QUI PERMET DE GARANTIR LA PRECISION ET LA ROBUSTESSE DES SIMULATIONS INDEPENDAMMENT DU REGIME D'ECOULEMENT. PAR SOUCI D'EFFICACITE EN REGIME INCOMPRESSIBLE, L'INTEGRATION TEMPORELLE S'EFFECTUE DE MANIERE TOTALEMENT IMPLICITE GRACE A UN SCHEMA BDF PRECIS AU SECOND ORDRE ET UN PROCESSUS DE NEWTON APPROCHE. LA PROPOSITION D'UNE APPROXIMATION ORIGINALE, BASEE SUR LA METHODE DE COMPRESSIBILITE ARTIFICIELLE DE CHORIN, CONDUIT A UN GAIN SIGNIFICATIF EN TERME D'EFFICACITE ET DE ROBUSTESSE PAR RAPPORT A L'UTILISATION DES MATRICES DE PRECONDITIONNEMENT BASSE VITESSE DEVELOPPEES DEPUIS UNE DIZAINE D'ANNEES. LES APPLICATIONS NUMERIQUES EFFECTUEES, QUI COUVRENT L'ENSEMBLE DES REGIMES D'ECOULEMENTS, DEMONTRENT LA CAPACITE DE LA METHODE PROPOSEE A SE SUBSTITUER AUX ALGORITHMES EMPLOYES DANS LES CODES DE CALCUL INCOMPRESSIBLE, BAS MACH ET COMPRESSIBLE.
Download or read book LESFOIL Large Eddy Simulation of Flow Around a High Lift Airfoil written by Lars Davidson and published by Springer Science & Business Media. This book was released on 2012-09-22 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large Eddy Simulation is a relatively new and still evolving computatio nal strategy for predicting turbulent flows. It is now widely used in research to elucidate fundamental interactions in physics of turbulence, to predict phe nomena which are closely linked to the unsteady features of turbulence and to create data bases against which statistical closure models can be asses sed. However, its applicability to complex industrial flows, to which statisti cal models are applied routinely, has not been established with any degree of confidence. There is, in particular, a question mark against the prospect of LES becoming an economically tenable alternative to Reynolds-averaged N avier-Stokes methods at practically high Reynolds numbers and in complex geometries. Aerospace flows pose particularly challenging problems to LES, because of the high Reynolds numbers involved, the need to resolve accura tely small-scale features in the thin and often transitional boundary layers developing on aerodynamic surfaces. When the flow also contains a separated region - due to high incidence, say - the range and disparity of the influen tial scales to be resolved is enormous, and this substantially aggravates the problems of resolution and cost. It is just this combination of circumstances that has been at the heart of the project LESFOIL to which this book is devoted. The project combined the efforts, resources and expertise of 9 partner organisations, 4 universities, 3 industrial companies and 2 research institu tes.
Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 2002 with total page 1302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book RESOLUTION DES EQUATIONS DE NAVIER STOKES AVEC MODELES DE TRANSITION written by FREDERIC.. GAIBLE and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ON PRESENTE LE SYSTEME DES EQUATIONS DE NAVIER-STOKES COMPRESSIBLES AVEC L'HYPOTHESE DE CONSERVATION DE L'ENTHALPIE D'ARRET, EN METTANT L'ACCENT SUR LES CONDITIONS AUX LIMITES, POUR LES ECOULEMENTS AERODYNAMIQUES EXTERNES A GRAND NOMBRE DE REYNOLDS. PUIS LE MECANISME DE TRANSITION LAMINAIRE-TURBULENT SUR UNE PAROI SOLIDE EST DECRIT ET UNE REVUE DES PRINCIPAUX CRITERES DE TRANSITION EST EFFECTUEE. LA REPRESENTATION DE L'ECOULEMENT MOYEN, A FAIBLE NOMBRE DE MACH, AUTOUR D'UN PROFIL D'AILE EST ENSUITE ENVISAGEE AVEC UNE REGION LAMINAIRE, UNE REGION TRANSITIONNELLE, QUI EST DETECTEE ET CALCULEE, ET UNE REGION TURBULENTE, MODELISEE. LE SCHEMA NUMERIQUE UTILISE EST EXPLICITE EN TEMPS ET CENTRE EN ESPACE. DES TERMES DE DISSIPATION ARTIFICIELLE SONT AJOUTES POUR ASSURER LA STABILITE DE L'ALGORITHME EN ECOULEMENT BIDIMENSIONNEL. LEUR INFLUENCE SUR LA SOLUTION OBTENUE DANS LA REGION DE COUCHE LIMITE EST ANALYSEE ET UNE NOUVELLE VERSION DE LA DISSIPATION ARTIFICIELLE EST PROPOSEE. ENFIN, UNE COMPARAISON AUX RESULTATS EXPERIMENTAUX SUR DEUX PROFILS EST EFFECTUEE
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Download or read book Boundary Layer Theory written by Hermann Schlichting (Deceased) and published by Springer. This book was released on 2016-10-04 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of the near-legendary textbook by Schlichting and revised by Gersten presents a comprehensive overview of boundary-layer theory and its application to all areas of fluid mechanics, with particular emphasis on the flow past bodies (e.g. aircraft aerodynamics). The new edition features an updated reference list and over 100 additional changes throughout the book, reflecting the latest advances on the subject.
Download or read book Dynamique Non lin aire Et Le Chaos written by and published by . This book was released on 1993 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Parallel Finite Volume Algorithm for Large eddy Simulation of Turbulent Flows written by Trong T. Bui and published by . This book was released on 1998 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Volumes for Complex Applications IX Methods Theoretical Aspects Examples written by Robert Klöfkorn and published by Springer Nature. This book was released on 2020-06-09 with total page 727 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the 9th conference on "Finite Volumes for Complex Applications" (Bergen, June 2020) are structured in two volumes. The first volume collects the focused invited papers, as well as the reviewed contributions from internationally leading researchers in the field of analysis of finite volume and related methods. Topics covered include convergence and stability analysis, as well as investigations of these methods from the point of view of compatibility with physical principles. Altogether, a rather comprehensive overview is given on the state of the art in the field. The properties of the methods considered in the conference give them distinguished advantages for a number of applications. These include fluid dynamics, magnetohydrodynamics, structural analysis, nuclear physics, semiconductor theory, carbon capture utilization and storage, geothermal energy and further topics. The second volume covers reviewed contributions reporting successful applications of finite volume and related methods in these fields. The finite volume method in its various forms is a space discretization technique for partial differential equations based on the fundamental physical principle of conservation. Many finite volume methods preserve further qualitative or asymptotic properties, including maximum principles, dissipativity, monotone decay of free energy, and asymptotic stability, making the finite volume methods compatible discretization methods, which preserve qualitative properties of continuous problems at the discrete level. This structural approach to the discretization of partial differential equations becomes particularly important for multiphysics and multiscale applications. The book is a valuable resource for researchers, PhD and master’s level students in numerical analysis, scientific computing and related fields such as partial differential equations, as well as engineers working in numerical modeling and simulations.
Download or read book Numerical Heat Transfer and Fluid Flow written by Suhas Patankar and published by CRC Press. This book was released on 2018-10-08 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms. Using simple algebra and elementary calculus, the author develops numerical methods for predicting these processes mainly based on physical considerations. Through this approach, readers will develop a deeper understanding of the underlying physical aspects of heat transfer and fluid flow as well as improve their ability to analyze and interpret computed results.
Download or read book Satellite Situation Report written by Goddard Space Flight Center. Office of Public Affairs and published by . This book was released on 1977 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Aerodynamics written by Jorge Colman Lerner and published by BoD – Books on Demand. This book was released on 2012-05-11 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerodynamics, from a modern point of view, is a branch of physics that study physical laws and their applications, regarding the displacement of a body into a fluid, such concept could be applied to any body moving in a fluid at rest or any fluid moving around a body at rest. This Book covers a small part of the numerous cases of stationary and non stationary aerodynamics; wave generation and propagation; wind energy; flow control techniques and, also, sports aerodynamics. It's not an undergraduate text but is thought to be useful for those teachers and/or researchers which work in the several branches of applied aerodynamics and/or applied fluid dynamics, from experiments procedures to computational methods.
Download or read book Genmix written by D Brian Spalding and published by Elsevier. This book was released on 2014-05-18 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genmix: A General Computer Program for Two-dimensional Parabolic Phenomena explains a computer program called GENMIX. The main intention of the program is to be used as a tool of instructions. The name of the program is a mixture of two considerations: its generality and its concern for mixing processes. The book aims to help the potential user to understand the physical and mathematical basis of the topic computer program. It is also the aim of the book to make the program applicable to practical problems. The book is arranged in such a way as to parallel a course of lectures and associated computer-workshop sessions wherein the student is allowed to do some elementary computations as soon as he has gained some knowledge of the method. The book contains the mathematical, physical, and computer-coding aspects of the program. Concepts such as the boundary layer, two-dimensional, and steady- flow are defined and discussed in depth. The text will be a useful tool for computer instructors and students.
Download or read book Advances in Rotorcraft Technology written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Flight Vehicle Integration Panel. Symposium and published by . This book was released on 1997 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flow Sensing in Air and Water written by Horst Bleckmann and published by Springer Science & Business Media. This book was released on 2014-01-22 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, leading scientists in the fields of sensory biology, neuroscience, physics and engineering explore the basic operational principles and behavioral uses of flow sensing in animals and how they might be applied to engineering applications such as autonomous control of underwater or aerial vehicles. Although humans possess no flow-sensing abilities, countless aquatic (e.g. fish, cephalopods and seals), terrestrial (e.g. crickets and spiders) and aerial (e.g. bats) animals have flow sensing abilities that underlie remarkable behavioral feats. These include the ability to follow silent hydrodynamic trails long after the trailblazer has left the scene, to form hydrodynamic images of their environment in total darkness, and to swim or fly efficiently and effortlessly in the face of destabilizing currents and winds.
Download or read book Flow and Heat Transfer in Rotating disc Systems written by John Michael Owen and published by . This book was released on 1989 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discussing fluid mechanics and heat transfer in rotating-disc systems, this text simplifies and extends existing information to provide a basic understanding of the subject. Physical insight, mathematical models and experimental data are used to explain the flow structure and provide theoretical methods and correlations which will be of use to research workers and designers.
Download or read book Computational Methods for Fluid Flow written by Roger Peyret and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: In developing this book, we decided to emphasize applications and to provide methods for solving problems. As a result, we limited the mathematical devel opments and we tried as far as possible to get insight into the behavior of numerical methods by considering simple mathematical models. The text contains three sections. The first is intended to give the fundamen tals of most types of numerical approaches employed to solve fluid-mechanics problems. The topics of finite differences, finite elements, and spectral meth ods are included, as well as a number of special techniques. The second section is devoted to the solution of incompressible flows by the various numerical approaches. We have included solutions of laminar and turbulent-flow prob lems using finite difference, finite element, and spectral methods. The third section of the book is concerned with compressible flows. We divided this last section into inviscid and viscous flows and attempted to outline the methods for each area and give examples.
